1012021210001 has 8 divisors (see below), whose sum is σ = 1013282408424. Its totient is φ = 1010760710400.

The previous prime is 1012021209949. The next prime is 1012021210007. The reversal of 1012021210001 is 1000121202101.

It can be written as a sum of positive squares in 4 ways, for example, as 142977759376 + 869043450625 = 378124^2 + 932225^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012021210001 - 2⁶ = 1012021209937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012021210007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2753951 + ... + 3099723.

It is an arithmetic number, because the mean of its divisors is an integer number (126660301053).

Almost surely, 2^{1012021210001} is an apocalyptic number.

It is an amenable number.

1012021210001 is a deficient number, since it is larger than the sum of its proper divisors (1261198423).

1012021210001 is a wasteful number, since it uses less digits than its factorization.

1012021210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349411.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1012021210001 its reverse (1000121202101), we get a palindrome (2012142412102).

The spelling of 1012021210001 in words is "one trillion, twelve billion, twenty-one million, two hundred ten thousand, one".